Fluid handling – Liquid level responsive or maintaining systems – By float controlled valve
Patent
1977-04-13
1979-12-11
Schwadron, Martin P.
Fluid handling
Liquid level responsive or maintaining systems
By float controlled valve
137443, 137446, 251353, F16k 3126
Patent
active
041778294
ABSTRACT:
A float controlled valve including a first body having a passage passing through it, the outlet end of the passage defining a valve seat, a co-operating second body having a closure member, the first body and second body being telescopically movable relative to each other while being in sealing contact to define a chamber including the valve seat and the closure member, and an outlet from said chamber, means being provided for moving the second body with closure member axially relative to the first body with valve seat to cause closing of the valve. A stop valve is built into the passage upstream of the valve seat to isolate the valve seat from supply pressure. The float has a short lever arm and the means for moving the second body comprises a pivotally mounted member supporting eccentrically of the pivot a transverse float arm having one end projecting from the pivotally mounted member and located for engagement with the second body to urge it towards a closed condition as the pivotally mounted member is rotated by a rising float associated with the float arm and means for adjusting axially the degree to which the said end projects from the pivotally mounted member. A loose closure element is free to be moved onto the valve seat when there is a reverse pressure gradient in the water in the valve, to provide a non return function.
REFERENCES:
patent: 327040 (1885-09-01), Vehr et al.
patent: 428199 (1890-05-01), Birkery
patent: 645662 (1900-03-01), Emery
patent: 947106 (1910-01-01), Kirk
patent: 1314160 (1919-08-01), Stengel
patent: 1547255 (1925-07-01), Mueller
patent: 1969645 (1934-08-01), Glenn
patent: 2230323 (1941-02-01), Guyton
patent: 2367951 (1945-01-01), Lewis et al.
patent: 2664913 (1954-01-01), Patten
Schwadron Martin P.
Walton G. L.
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